diff --git a/setup.cfg b/setup.cfg
index 24dae824..ca5fb628 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -5,6 +5,7 @@ cover-erase = true
 cover-inclusive = true
 verbosity=2
 detailed-errors=1
+where = tests
 
 [build_sphinx]
 source-dir = doc/source